A minimal example of a node server able to serve all files inside a directory. It uses no dependencies like express.

tiny_node_server.js

// 1. No dependencies.
// 2. Provide files in current directory and childrens
// 3. Tiny.
// Useful if you need to quickly setup a webserver for testing or prototyping.

const port = 80;

const http = require('http');
const fs = require('fs');
const path = require('path');


let server = http.createServer((req,res) => {
	let p = req.url;
	p = "."+path.normalize(p);

	if(fs.existsSync(p)){
		let f = fs.statSync(p);
		if(f.isFile()){
			let s = fs.createReadStream(p);
			s.on("data", (d) => {
				res.write(d);
			});
			s.on("end", () => {
				res.end();
			});
		}else{
			res.write(`404: ${p}`);
			res.end();
		}
	}else{
		res.write(`404: ${p}`);
		res.end();
  }

});

server.listen(port,() => {
	console.log(`http://localhost:${port}`);
});